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Instability using PDE module
Posted Oct 9, 2012, 5:29 AM EDT Modeling Tools, Parameters, Variables, & Functions 5 Replies
As beginner with COMSOL I'm having a problem with the stability of my COMSOL results.
In the PDE module I try to solve four coupled differential equations regarding a MHD flow in an annular channel. At one boundary, the velocity profile shows oscillations. Increasing the mash results in stronger oscillations in a smaller region. Does someone have a suggestion how to suppress the oscillations without simply working with a finer mash?